Audio/video synchronization is usually fine in straightforward conferencing, but bokeh or virtual-camera lag can cause noticeable drift in some setups.
Pros: adjustable field of view, rotation flexibility
Cons: echo reduction, security features
Best Webcams for lip-sync accuracy
Lip-sync is a real weak spot in the small number of reports that mention it, with audio and video sometimes drifting noticeably apart.
Pros: motion blur, autofocus accuracy
Cons: lip-sync accuracy, security features